ANALYSIS OF THE CYCLIC STRESS IN INCONEL 738LC SUPERALLOY AT ELEVATED TEMPERATURE

摘要：

The hysteresis loops of cast Inconel 738LC superalloy obtained from multiple step tests at 23 and 800 ℃ were analyzed using a generalised statistical theory of the hysteresis loop.The plot of the second derivative yields information on the average effective stress and the probability density function of the critical internal stresses.The probability density function in superalloy has two peaks,at both temperatures,which correspond to the two-phase structure.Cyclic hardening/softening curves and cyclic stress-strain curves were obtained at both temperatures.

关键词： Cyclic straining Hysteresis loop Effective and internal stresses Elevated temperature Superalloy

作者: M.Petrenec J.Polák K.Obrtlik

作者单位: Institute of Physics of Materials,Academy of Sciences of the Czech Republic,v.v.i.,(Z)i(z)kova 22,616 62 Brno,Czech Republic.

会议类型: 国际会议

会议名称: 第二届国际非均质材料力学会议(The Second International Conference on Heterogeneous Material Mechanics)

会议地点: 安徽黄山

会议语种:英文

页码: 1214-1218

在线出版日期: 2008-06-03（万方平台首次上网日期，不代表论文的发表时间）